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While the chips alone will, in almost all cases, drive a receiver
Local Oscillator well, many tube-type transmit crystal
oscillators,
like that in the BC-669 or the ARC-5 VHF,
need some extra "umph" to be driven by one of these.
Did some work on it years ago. No idea where the notes are now.
Need to get back to that.
Hi Wayne...Are you referring to the Epson programmable oscillator chips? You can order them to put out a square wave on any freq up to about 125 mc as I recall. $4.10 apiece, very fast delivery from Digikey.I revived a TRC-88 USB manpack with them versus custom crystals in the receiver LO and transmitter HFO, they work just fine, pretty easy to implement. Just add + 5 volts. Take a look here for details on how I did it. https://www.n6cc.com/trc-88-hf-cwssb-transceiver/Thanks to W9RAN for the heads up on these versatile parts!
TimN6CC
On Sat, Nov 20, 2021 at 8:02 AM <[email protected]> wrote:
What is the best option for using those little digital oscillators to replace crystals? I bought a 1 MHZ oscillator module and used it to replace the calibration oscillator in an SG-297, and that worked just great, but I need some specific frequencies for sets like the R-361, SCR-522 and ARC-3.
Thanks,
Wayne
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